Tilecache 无法使用 Mapnik 生成图块
我下载了澳大利亚 OSM 提取内容，并使用 osm2pgsql 将其移至名为 gis 的数据库中。
我已将generate_tiles.py更改为仅生成澳大利亚的图块：
bbox = (-180.0,-90.0, 180.0,90.0)
render_tiles(bbox, mapfile, tile_dir, 0, 5, "World")
minZoom = 10
maxZoom = 16
bbox = (101.1,-6.9,165.5,-45.9)
render_tiles(bbox, mapfile, tile_dir, minZoom, maxZoom)
当我尝试使用以下命令生成图块时： 导出 MAPNIK_MAP_FILE="osm.xml" &&导出 MAPNIK_TILE_DIR="/tmp/tilecache/" && ./z0generate_tiles.py
在 /tmp/tilecache 中使用 png 切片创建了许多目录。这些图块上有州界和国家名称，而且似乎确实有高速公路。 但是..当我导航到该地址时： http://localhost/osm/tilecache-2.11/index.html 我只看到国家和州，但没有标签，也没有街道。我认为这可能是访问 postgis 数据的权限问题。我已经进入 psql 并发出： 将数据库 gis 上的所有权限授予公共
在 /etc/tilecache.cfg 中我有：
[cache]
type=Disk
base=/tmp/tilecache
[osm]
type=Mapnik
mapfile=/home/(my user_name)/bin/mapnik/my_osm.xml
spherical_mercator=true
tms_type=google
metatile=yes
[basic]
type=WMS
url=http://labs.metacarta.com/wms/vmap0
extension=png
看来mapnik 无法与postgis 通信。我已经登录 postgres 并执行： GRANT ALL PRIVILEGES ON DATABASE gis TO PUBLIC
我生成了 my_osm.xml 文件，内容如下：
./generate_xml.py osm.xml my_osm.xml --dbname gis --user (uname) --password (pword) --accept-none
它生成时没有任何错误。
我能接受的就这么多了。通过网络访问时会创建新文件，它们只是没有任何道路信息。 有什么想法吗？
I downloaded the Australian OSM extract and moved it into a database called gis using osm2pgsql.
I have changed generate_tiles.py to only generate tiles for Australia:
bbox = (-180.0,-90.0, 180.0,90.0)
render_tiles(bbox, mapfile, tile_dir, 0, 5, "World")
minZoom = 10
maxZoom = 16
bbox = (101.1,-6.9,165.5,-45.9)
render_tiles(bbox, mapfile, tile_dir, minZoom, maxZoom)
When I attempt to generate tiles with:
export MAPNIK_MAP_FILE="osm.xml" && export MAPNIK_TILE_DIR="/tmp/tilecache/" && ./z0generate_tiles.py
Lots of directories are created in /tmp/tilecache with png tiles. The tiles have state boundaries and country names and there does appear to be highways.
But.. when I navigate to the address:
http://localhost/osm/tilecache-2.11/index.html
I only see countries and states, but no labels and no streets. I figure it is probably a permissions issue with accessing the postgis data. I have gone into psql and issued:
GRANT ALL PRIVILEGES ON DATABASE gis TO PUBLIC
In /etc/tilecache.cfg I have:
[cache]
type=Disk
base=/tmp/tilecache
[osm]
type=Mapnik
mapfile=/home/(my user_name)/bin/mapnik/my_osm.xml
spherical_mercator=true
tms_type=google
metatile=yes
[basic]
type=WMS
url=http://labs.metacarta.com/wms/vmap0
extension=png
It would seem that mapnik is not able to communicate with postgis. I have logged into postgres and executed:GRANT ALL PRIVILEGES ON DATABASE gis TO PUBLIC
I generated the my_osm.xml file with the following:
./generate_xml.py osm.xml my_osm.xml --dbname gis --user (uname) --password (pword) --accept-none
It generated without any errors.
That's about as far as I can take it. New files are being created when accessed via the web, they just don't have any road information.
Any ideas?
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程序应该匹配。
要检查丢失的道路的几件事：
有时旧的 geos 库的问题可能会导致缺少 osm2pgsql 导入的数据，因此请确保 plant_osm_line 表中有很多行：
select count(*) from Planet_osm_line;
此外，请确保您运行的是最新的 Mapnik 版本，至少为 0.7.0，最好为 0.7.1。
尝试使用 nik2img.py 渲染一些地图，并确保 mapnik 现在输出任何可能导致此问题的警告 - 一个常见问题可能是缺少 EPSG:900913 的 proj4 epsg 定义
One comment:
program should match.
Couple things to check on your missing roads:
Sometime problems with old geos libraries can lead to lacking data imported by osm2pgsql, so make sure there are a lot of rows in the plant_osm_line table:
select count(*) from planet_osm_line;
Also, make sure you are running the latest Mapnik version, at least 0.7.0, ideally 0.7.1.
Try rendering a few maps with nik2img.py and make sure mapnik does now output any warnings that might be causing this - a common issue can be missing proj4 epsg definitions for EPSG:900913